Domestic refrigerating apparatus



R. M. BLAKELY. DOMESTIC REFRIGERATING APPARATUS.

APPLICATION FILED DEC.21, l9l7. RENEWED JUNE 28, I920.

Patented June 7, 1921.

2 SHEETSSHEET l.

A TTORNEYS' R. M. BLAKELY.

DOMESTIC REFRlGERA-TING APPARATUS. APPLICATION FILED 0:021. I917.RENEWED JUNE 28.1920.

1,381,056. Patented June 7, 1921.

2 SHEETS-SHEET 2.

WIT/ E8858 J4 INVENTOR MJM H? ATTORNEYS UNITED STATES PATENT OFFICE.

DOMESTIC REFRIGERATING APPARATUS,

Specification of Letters Patent.

Patented June 7, 1921.

Application filed December 21, 1917, Serial No. 208,256. Renewed June28', 1920. Serial No. 892,517.

To all whom it may concern.

Be it known that I, RICHARD M. BLAKELY, a citizen of the United Statesand a resident of Dayton in the county of Montgomery and State of ()hio,have invented a new and Improved Domestic Refrigerating Apparatus, ofwhich the following is a full, clear, and exact description.

My invention relates to a domestic refrigcrating apparatus of the type1Il wh ch a readily condensable fluid or vapor 1s utilized forrefrigerating purposes.

An object of the invention is to provide a simple, compact and efficientarrangement which is particularly adaptable for apparatus of smallcapacit Another object of t e invention is to provide a refrigeratingapparatus in which moist air is utilized as a cooling medium forcondensing the vapors of the refrigerating medium.

A further object of the invention is to provide a housing for theapparatus so as to render the same substantially noiseless.

With the above and other objects in view, the nature of which will morefully appear as the description proceeds, the invention consists in thenovel construction, combination and arrangement of parts as herein fullydescribed, illustrated and claimed.

The invention is characterized by the provision of a reciprocatingcompressor coupled directly to a motor, and a fan on the shaft betweenthe motor and the compressor for circulatin the air for cooling thecondensing coils of tie refrigerating system.

In the accompanying drawings, forming part of the application, similarcharacters of reference indicate corresponding parts in all the views.

. Figure 1 is a longitudinal section through the housing, including theapparatus, and partly through the cooling chamber, which includes theabsorber coils; the moisture supply tank; the absorber and the condensercoils being shown in section;

Fig. 2, a vertical section through the compressor;

Fig. 3, a section through the receiver for the condensing refrigeratingmedium;

gig. 4, a cross section on line 4-4, Fig. 3; an

Fig. 5, a cross section on line 5-5, Fig. 3, both sections being throughthe lines for controlling the flow of the condensed refrigerating mediumfrom the condensing coil to the receiver.

Before proceeding to a more detailed description of my invention it mustbe clearly understood that the system will include some automatictemperature regulating device for the purpose of starting and stoppingthe motor. This regulating device will be placed in proximity to theexpanding or absorber coils. This is not shown as it does not form partof the invention.

Referring to the drawings, 6 is the motor which is coupled directly to acrank shaft 7 of the compressor. The same shaft carries a fan 8 which isadapted to circulate the air through and about the condenser coil 9,which is preferably disposed coaxial with the crank shaft of thecompressor. The shaft 7 bears in roller bearings 10 carried by theextension 11 of the crank casing 12 of the compressor. Packing means 13are interposed between the two bearings in the extension 11 of thecasing. This packing carries a yielding member 14: which continuouslyexerts pressure against a gland 15 which forces the packing about theshaft 7.

A roller bearing 16 is provided between a connecting rod 17 and thecrank of the shaft 7. The reason for providing ball hearings in thecompressor is to avoid the use of lubricating oils and the subsequentformation of a permanent gas in the system. In prox imity of each of theball bearings a lubricant pad 18 is provided which supplies thenecessary lubricant of a character which is not easily vaporized. Thecrank casing 12 hasa hand hole closed by a plug 19. A cylinder 20 opensinto the crank casing, and the communication between the cylinder andthe crank casing is controlled by a valve 21 mounted in the top of apiston 22. The valve is normally maintained against its seat by a spring23.

The -rylinder head 24 has also a valve 25 normally maintained closed bya spring 26, the valve controlling the fiow of the compressed fluid tothe compressor coil 9 through a valve 28, which is preferably providedat the head 24.. The valve 21 controls the inflow of the expanding fluidfrom the crank to the cylinder, the crank casing being connected to theexpanding or absorber coil 29 which is located in the cooling chamber.

forced into the condenser coil by the compressor is cooled in thecondensation coil by air drawn through a passage 35 formed in the upperpart of a housing 36 which incloses a motor and compressor and also awater tank 37 which is so disposed as to form part of the passage 35.The housing is preferably lined with sound insulating material 38. Themoisture from the tank 37 is discharged into the passage 35 by suitablemembers 39, such as wicks. In consequence, the air drawn by the fanthrough said passage is caused to absorb moisture, and the presence ofmoisture in the air which is caused to circulate about and within thecondenser coil has a greater heatabsorbing quality than ordinary air.The passage 35 is preferably made irregular by means of bafiies 40 whichalternate with the members 39 so as to deaden the sound caused by themovement of the motor, fan and compressor. The air circulating about thecondenser coil is driven out through a passage 41, also provided withbaflies 42 to deaden the sound. If desired, a suitable baflie can beprovided above the condenser coil to insure a better circulation of airabout the compressor and coil before the air is discharged out of thehousing 36 through the passage 41.

It will be noted that the receiver is at the very' bottom of the systemand thus insures a liquid covering for the plug 31 which has arestricted passage. This position of the plug permits any liquid in thesystem to drain into the receiver, consequently, when the motor startsthe plant into 0 eration the compressor and motor overloa caused by thehigh pressure that accumulates on the absorber side during thenonoperating period is quickly reduced; thus, the plug with therestricted passage permits the reduction of an overload without the useof bivalves, diaphragm valves, or similar means.

The valve 28 is used only when installing the apparatus and charging thefluid into the system. At all other times it is fully open withoutcausing any restriction to the flow.

I claim:

1. A refrigerating apparatus comprising in combination, a motor, acompressor having its shaft coupled directly to the motor,

a condenser coil coaxial with the shaft of the compressor, a fan on thecompressor shaft for circulating air about the condenser coil, and anabsorber coil interposed between the condenser coil and the compressor.

2. A refrigerating apparatus comprising in combination, a housing, amotor in said. housing, a compressor in the housing having its drivingshaft coupled directly to the shaft of the motor, a condenser coilwithin the housing coaxial with the compressor shaft, a fan on thecompressor shaft, said housing having an inlet and an outlet for theair, means in said housing for supplying moisture to the air coming intothe ousing, and an absorber coil interposed between the condenser coiland the compressor.

3. A refrigerating apparatus comprising in combination, a housing, amotor in the housing, a compressor in the housing coupled directly tothe motor, a condenser coil, a fall between the compressor and motor forcirculating air about the coil, said housing having an air inlet and anair outlet. means in the housing associated with the air inlet forsupplying moisture to the air as its enters the housing, and an absorbercoil interposed between the condenser coil and the compressor.

4. A refrigerating apparatus comprising in combination, a housing havingan air inlet and an air outlet, a motor in thehousing, a compressor inthe housing coupled to the motor, a condenser coil .in the housing, afan for circulating the air through the inlet and the outlet of thehousing and about the coil, bailies associated with the inlet and outletto deaden the noise produced in the housing by the moving parts, and anabsorber coil interposed between the condenser coil and the compressor.

5. A refrigerating apparatus comprising in combination, a housing linedinteriorly with sound insulating means, said housing 110 having an airinlet and an air outlet, baffles in said air inlet and air outlet, amotor in the housing, a compressor in the housing coupled to the motor,a condenser coil,

a fan for circulating the air through the inlet and outlet of thehousing and about the condenser coil, and an absorber coil interposedbetween the condenser coil and the compressor.

6. A refrigerating apparatus comprising 120 in combination, a housinglined interiorly with sound-insulating means, said housing having an airinlet and an air outlet, baffles in the air inlet and the air outlet, amotor in the housing, a compressor in the 125 housing coupled directlyto the motor, a condenser coil in the housing, a fan interposed betweenthe motor and the compressor for circulating the air through the inletand outlet of the housing and about the 130 coil, and an absorber coilbetween the com pressor and the condenser coil.

8. A refrigerating apparatus comprising 15 in combination, a motor, acompressor driven from the motor by means of a shaft, an annularcondenser c011 coaxial with the shaft of the compressor, a fan on thecomressor shaft for creating an air current t rough the annularcondenser coil, and an absorber coil interposed between the condensercoil and'the com ressor.

RICHARD MATH W BLAKELY.

